B760 GAMING PLUS WIFI Motherboard not detecting Crucial M.2 SSD

[sipritc157302e1]

Hi -

Very long story short, I've got the above motherboard and am using a Crucial M.2 500GB SSD. This already has Windows 11 installed and was working in another system (MSI PRO B760-P II) last week.
To this new setup, I've added a Kingston 1TB M.2 SSD.

When I have the Crucial in the M.2_1 slot and the Kingston in the M.2_2 slot, the BIOS is only detecting the Kingston.
To discount any motherboard / slot issue, I swapped the drives between the slots and the Kingston detects as expected in the M.2_1 slot, the Crucial is not detected in the M.2_2 slot.

I've updated to the latest BIOS firmware (7D98vHA - 15/10/2024) and still nothing.

Is there a setting I need to change here, or has this SSD died on me?

 

[plutomate]

you just prove the motherboard work as expected, better check the SSD again on the old system.

 

[sipritc157302e1]

Well that's the long story - the other system (after seemingly inserting a wifi PCIe card and a SATA drive) was no longer powering up. After LOTS of fault tracking (switched out PSU; switched out every wire, one by one; different kettle lead; different wall socket etc.), I've put it down to the PCIe card doing something to the motherboard.

I'm wondering if the SSD was also a casualty. I've got a new Kingston 500GB on order, so hopefully that'll solve it and I can put all this mess behind me!